13938577 has 2 divisors, whose sum is σ = 13938578. Its totient is φ = 13938576.

The previous prime is 13938559. The next prime is 13938581. The reversal of 13938577 is 77583931.

13938577 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7568001 + 6370576 = 2751^2 + 2524^2 .

It is a cyclic number.

It is not a de Polignac number, because 13938577 - 2¹⁵ = 13905809 is a prime.

It is not a weakly prime, because it can be changed into another prime (13938527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6969288 + 6969289.

It is an arithmetic number, because the mean of its divisors is an integer number (6969289).

Almost surely, 2^13938577 is an apocalyptic number.

It is an amenable number.

13938577 is a deficient number, since it is larger than the sum of its proper divisors (1).

13938577 is an equidigital number, since it uses as much as digits as its factorization.

13938577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 158760, while the sum is 43.

The square root of 13938577 is about 3733.4403704894. The cubic root of 13938577 is about 240.6612378549.

The spelling of 13938577 in words is "thirteen million, nine hundred thirty-eight thousand, five hundred seventy-seven".